/*
   Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef NDB_DIST_PRIV_UTIL_H
#define NDB_DIST_PRIV_UTIL_H

class Ndb_dist_priv_util
{
    size_t m_iter_curr_table;
public:
    Ndb_dist_priv_util()
    {
        iter_reset();
    }

    const char *database() const
    {
        return "mysql";
    }

    // Iterator for distributed priv tables name
    const char *iter_next_table()
    {
        static const char *tables[] = {
            "user", "db", "tables_priv", "columns_priv", "procs_priv", "host",
            "proxies_priv"
        };

        if (m_iter_curr_table >= (sizeof(tables) / sizeof(tables[0])))
            return NULL;

        m_iter_curr_table++;
        return tables[m_iter_curr_table - 1];
    }

    // Reset iterator to start at first table name
    void iter_reset()
    {
        m_iter_curr_table = 0;
    }

    // Determine if a given table name is in the list
    // of distributed priv tables
    static
    bool is_distributed_priv_table(const char *db, const char *table)
    {
        Ndb_dist_priv_util dist_priv;

        if (strcmp(db, dist_priv.database())) {
            return false; // Ignore tables not in dist_priv database
        }

        const char *priv_table_name;

        while((priv_table_name = dist_priv.iter_next_table())) {
            if (strcmp(table, priv_table_name) == 0)
                return true;
        }

        return false;
    }

};

#endif
